//
//  QRCodeViewController.m
//  BaoGongBao
//
//  Created by User on 14/11/18.
//  Copyright (c) 2014年 irule. All rights reserved.
//

#import "QRCodeViewController.h"

@interface QRCodeViewController ()

@end

@implementation QRCodeViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
	self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
	if (self) {
		// Custom initialization
	}
	return self;
}

- (void)viewDidLoad
{
	[super viewDidLoad];
	self.view.backgroundColor = [UIColor grayColor];
	UIButton * scanButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
	[scanButton setTitle:@"取消" forState:UIControlStateNormal];
	scanButton.frame = CGRectMake(100, 420, 120, 40);
	[scanButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
	[self.view addSubview:scanButton];

	UILabel * labIntroudction= [[UILabel alloc] initWithFrame:CGRectMake(15, 40, 290, 50)];
	labIntroudction.backgroundColor = [UIColor clearColor];
	labIntroudction.numberOfLines=2;
	labIntroudction.textColor=[UIColor whiteColor];
	labIntroudction.text=@"将二维码图像置于矩形方框内，离手机摄像头10CM左右，系统会自动识别。";
	[self.view addSubview:labIntroudction];


	UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(10, 100, 300, 300)];
	imageView.image = [UIImage imageNamed:@"pick_bg"];
	[self.view addSubview:imageView];

	upOrdown = NO;
	num =0;
	_line = [[UIImageView alloc] initWithFrame:CGRectMake(50, 110, 220, 2)];
	_line.image = [UIImage imageNamed:@"line.png"];
	[self.view addSubview:_line];

	timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation1) userInfo:nil repeats:YES];




}
-(void)animation1
{
	if (upOrdown == NO) {
		num ++;
		_line.frame = CGRectMake(50, 110+2*num, 220, 2);
		if (2*num == 280) {
			upOrdown = YES;
		}
	}
	else {
		num --;
		_line.frame = CGRectMake(50, 110+2*num, 220, 2);
		if (num == 0) {
			upOrdown = NO;
		}
	}

}
-(void)backAction
{

	[self dismissViewControllerAnimated:YES completion:^{
		[timer invalidate];
	}];
}
-(void)viewWillAppear:(BOOL)animated
{
	[self setupCamera];
}
- (void)setupCamera
{
	// Device
	_device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

	// Input
	_input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil];

	// Output
	_output = [[AVCaptureMetadataOutput alloc]init];
	[_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];

	// Session
	_session = [[AVCaptureSession alloc]init];
	[_session setSessionPreset:AVCaptureSessionPresetHigh];
	if ([_session canAddInput:self.input])
	{
		[_session addInput:self.input];
	}

	if ([_session canAddOutput:self.output])
	{
		[_session addOutput:self.output];
	}

	// 条码类型 AVMetadataObjectTypeQRCode
	_output.metadataObjectTypes =@[AVMetadataObjectTypeQRCode];

	// Preview
	_preview =[AVCaptureVideoPreviewLayer layerWithSession:self.session];
	_preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
	_preview.frame =CGRectMake(20,110,280,280);
	[self.view.layer insertSublayer:self.preview atIndex:0];

	// Start
	[_session startRunning];
}
#pragma mark AVCaptureMetadataOutputObjectsDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{

	NSString *stringValue;

	if ([metadataObjects count] >0)
	{
		AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
		stringValue = metadataObject.stringValue;
	}

	[_session stopRunning];
	[self dismissViewControllerAnimated:YES completion:^
	 {
		 [timer invalidate];
		 NSLog(@"%@",stringValue);
		 if ([self.delegate respondsToSelector:@selector(QRCodeViewControllerDelegateFinish:)]) {
    [self.delegate QRCodeViewControllerDelegateFinish:stringValue];
		 }
	 }];
}

- (void)didReceiveMemoryWarning
{
	[super didReceiveMemoryWarning];
	// Dispose of any resources that can be recreated.
}

@end
